Node.js App with MongoDB & Nexus Repository

A containerized full-stack environment featuring a Node.js Express application, MongoDB for data storage, and Sonatype Nexus for private Docker image management.

Architecture Overview

• App: Node.js Express service (Port 3000)
• Database: MongoDB (Port 27017)
• Nexus: Artifact & Docker Registry (UI: 8081, Docker: 8082)
• CI/CD: GitHub Actions via Self-Hosted Runner

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Prerequisites

• Docker and Docker Compose installed
• GitHub Self-Hosted Runner (for CI/CD)
• Port 8081, 8082, 3000, and 27017 available

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Getting Started

1. Environment Configuration

Create a .env file in the root directory to store your credentials:

MONGO_USER=admin
MONGO_PASS=your_password
MONGO_DB=myapp
NEXUS_PORT_UI=8081
NEXUS_PORT_DOCKER=8082

2. Launch Services

docker-compose up -d

3. Retrieve Initial Nexus Password

Wait 5 minutes for Nexus to initialize, then run; docker exec nexus cat /nexus-data/admin.password

Docker Registry Setup (Nexus)

To push to the local Nexus registry, you must allow;

1. Add the following to your daemon.json:

{"insecure-registries": ["localhost:8082"]}

2. Restart Docker

3. Login to the registry:

docker login localhost:8082

GitHub Actions Integration

This project uses Self-Hosted Runner to build and push images to the internal Nexus registry.

Required GitHub Secrets

Go to Settings > Secrets > Actions and add:

• NEXUS_USERNAME: Your Nexus admin username
• NEXUS_PASSWORD: Your Nexus admin password

Workflow Path

.github/workflows/nexus-deploy.yml triggers on every push to master

License

MIT